I have an early 2008 20" 2.4GHZ Core Duo iMac, 3Gb RAM, running ML. Its starting to feel quite sluggish ( I use it for graphic design, Indesign, Illustrator Photoshop etc..). I've seen a couple of tutorials on replacing the HD for an SSD and it looks like a fun project so I'm considering it. Is it worth it though? SSDs are not cheap. Will it give a decent performance boost or is it time to cash in the iMac whilst its still has some value. I'd welcome some opinions, maybe from someone who has done a similar upgrade?